Melt chocolate with milk over low heat, stirring until smooth, Add cream cheese; stir until melted, Stir in vanilla, Gradually add sugar, mixing until well blended, Combine oranges and coconut; toss lightly, For each serving, cover one cake slice with 1/4 c, orange mixture; top with 2 Tbsp,______, To reheat, spoon sauce into saucepan; stir over low heat until thoroughly heated, Makes 6 servings,